Sony KV-B14PD1 Service Manual ▷ View online
– 9 –
KV
-B14PD1
-B14PD1
RM-883
Additional Information
12
Troubleshooting
Additional Information
If you have any problems, read this manual again and
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
check the countermeasure for each of the symptoms
listed below.
If the problem persists, contact your nearest authorized
service center or dealer.
Snowy picture
Noisy sound
Noisy sound
/ Check the antenna.
/ Check the antenna connection on the TV
/ Check the antenna connection on the TV
and on the wall.
Dotted lines or stripes
/ This may be caused by local interference
(e.g. cars, neon signs and hair dryers). Adjust
the antenna for minimum interference.
the antenna for minimum interference.
Double images or “ghosts”
/ This may be caused by reflections from
nearby mountains or buildings. A highly
directional antenna may improve the picture.
directional antenna may improve the picture.
No color
/ Adjust the COLOR level in the on-screen
display.
/ Check the COLOR SYSTEM setting.
No picture
No sound
No sound
/Press POWER.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
/Check the antenna connection.
/Check the VCR connections.
/Check the power cord connection.
/Check the standby mode.
Good picture
No sound
No sound
/Press VOLUME +.
/Press MUTING.
/Press MUTING.
TV cabinet creaks
/Even if the picture or the sound is normal,
changes in the room temperature
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
sometimes make the TV cabinet expand or
contract, making a noise. This does not
indicate a malfunction.
Note on the remote commander
•
The supplied remote commander is used on several models of
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
the TV. If you do not find instructions for some controls that
are on the remote commander, that means your TV does not
employ the features of those controls, e.g. TEXT.
Note on the TV SYSTEM button
•
The TV SYSTEM button is not used on your TV.
Notes
•
When you switch on the TV, you may hear the “boon” sound
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
that is caused by the demagnetization of the TV. This does not
indicate a malfunction.
•
The picture color may become abnormal if you change the
direction of your TV. To obtain the normal picture color, press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
direction of your TV. To obtain the normal picture color, press
POWER on the TV to switch off the TV for five minutes and
then switch it on again.
WARNING
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
Do not install the appliance in a confined space, such as
a bookcase or built-in cabinet.
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KV
-B14PD1
-B14PD1
RM-883
2-1. REAR COVER REMOVAL
SECTION 2
DISASSEMBLY
2
Two screws
(BVTP 4
×
16)
3
One screw
(BVTP 3
(BVTP 3
×
16)
1 Two screws
(BVTP 4
×
16)
2-2. SERVICE POSITION
A board
2-3. REPLACEMENT OF CONTROL BUTTON
For replacement of the Control Button, cut the welded portions from it, exchange with the new
part, and fix it with screws (+BVTP).
part, and fix it with screws (+BVTP).
2
Two screws
(BVTP3
×
12)
1
Control button
2
Control button
1
Cut
1
Cut
– 11 –
KV
-B14PD1
-B14PD1
RM-883
2-4. PICTURE TUBE REMOVAL
1
Turn up one side of the rubber cap in the direction indicated by the arrow
a
.
•
REMOVAL OF ANODE-CAP
NOTE : After removing the anode, short curcuit the anode of the picture tube and
the anode cap to the metal chassis, CRT shield or carbon paint on the CRT.
•
REMOVING PROCEDURES
2
Using a thumb press down then pull up the rubber cap firmly in the direction
indicated by the arrow
indicated by the arrow
b
.
3
When one side of the rubber cap is separated from the anode button, the
anode-cap can be removed by turning up the rubber cap and pulling it up in the
direction of the arrow
anode-cap can be removed by turning up the rubber cap and pulling it up in the
direction of the arrow
c
.
•
HOW TO HANDLE AN ANODE-CAP
1
Do not damage the surface of anode-caps with sharp shaped objects.
2
Do not press the rubber too hard so as not to damage the inside of anode-caps.
A metal fitting called the shatter-hook terminal is built into the rubber.
A metal fitting called the shatter-hook terminal is built into the rubber.
3
Do not turn the foot of rubber over too hard.
The shatter-hook terminal will stick out or damage the rubber.
The shatter-hook terminal will stick out or damage the rubber.
1
Two screws
(BVTP 4
(BVTP 4
×
16)
3
Two washer head screws
(BVTP 4
(BVTP 4
×
16)
!
Four tapping
screws (5)
4
Speaker
block (L)
2
Speaker
block (R)
9
Tension spring
#
Degaussing coil
7
C board
5
Anode cap
Cushion
8
Deflection yoke
"
Picture tube
6
A board
a
a
b
b
c
Anode button
– 12 –
KV-B14PD1
RM-883
•
The following adjustments should be made when a complete
realignment is required or a new picture tube is installed.
•
These adjustments should be performed with rated power
supply voltage unless otherwise noted.
Controls and switch should be set as follows unless otherwise noted:
PICTURE control ........................................................... normal
BRIGHTNESS control ................................................... normal
SECTION 3
SET-UP ADJUSTMENTS
Fig. 3-1
Preparation :
•
In order to reduce the influence of geomagnetism on the set's
picture tube, face it east or west.
•
Switch on the set's power and degauss with the degausser.
3-1. BEAM LANDING
1. Input the white raster signal with the pattern generator.
Contrast
Brightness
2. Set the pattern generator raster signal to a green raster.
3. Move the deflection yoke to the rear and adjust with the purity
control so that the green is at the center and the blue and the red
take up equally sized areas on each side.
(See Figures 3-1 through 3-3.)
4. Move the deflection yoke forward and adjust so that the entire
screen is green. (See Figure 3-1.)
5. Switch the raster signal to blue, then to red and verify the
condition.
6. When the position of the deflection yoke has been decided,
fasten the deflection yoke with the screws.
7. If the beam does not land correctly in all the corners, use a
magnet to adjust it.
(See Figure 3-4.)
Perform the adjustments in the following order :
1. Beam Landing
2. Convergence
3. Focus
4. White Balance
Note : Test Equipment Required.
1. Color-bar/Pattern Generator
2. Degausser
3. Oscilloscope
Fig. 3-2
Fig. 3-4
}
normal
.................................................................................................................................................................................................................................
Fig. 3-3
GREEN
BLUE RED
Purity control
Deflection yoke positioning
corrects these areas.
Purity control corrects
this area.
Disk magnets or rotatable
disk magnets correct
these areas (a-d).
disk magnets correct
these areas (a-d).
b
c
a
d
b
a
d
c
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